FN® FCU Mk3 Fire Control Unit for 40mm Grenades by FN Herstal

Companies & Organizations:


FN Herstal SA
Voie de Liege 33
B-4040 Herstal

FN Herstal’s newly upgraded FN® FCU Mk3 Fire Control Unit features a high performance optoelectronic aiming system that vastly improves first round hit probability. It combines over 15 years of FN experience in the design and manufacture of Fire Control Units with user feedback and the latest generation of integrated electronic modules.




Hit first time, on target

Extremely reliable with no external moving parts


- night and day

- fast target engagement


- adjustment of the reticle

- drift effect compensation

Lightweight, ergonomic, easy to use

Shooter’s eye always remains on target

Quickly detachable

Quick and easy transition between different types of grenades

Compatible with

- any rifle and grenade launcher or multi-shot grenade launcher

- low and medium velocity grenades

Comes standard with specific features to ensure safe training

Suitable for extreme conditions (-32°C to +65°C, IP68, water, sand, mud)




Dimensions                            Length: 123mm (4.84")

                                               Width: 96mm (3.77")

                                               Height: 74mm (2.91") above rail

Weight                                   ~ 550 g (~ 125lb) without batteries

Battery                                   1 x CR123

Laser range                           30 - 1,000m

                                               Laser range finder - Laser beam: 1,500nm

                                               Laser range finder - Eye safety: Class 1


Visible laser pointer & infrared laser pointer    

- Training: Class 1

- Combat: Class 3B (available by using a separate specific operations switch)

Defense Products & Services: FN® FCU Mk3 Fire Control Unit for 40mm Grenades by FN Herstal
Companies & Organizations: 
Defense Products & Services Sectors: Fire control equipment, ground-based weapon
Country: Belgium
Description: FN® FCU Mk3 Fire Control Unit for 40mm Grenades
Source of Information: FN Herstal SA